SQL OLEDB provider: connection string to Failover partner

We're trying to connect to SQL 2012 STD with Database Mirroring enabled. We have 2 servers: DB1 (Principal) and DB2 (Mirror).

We're using connection string: Provider=SQLOLEDB;Data Source=DB1;Failover Partner=DB2;Database=databasename;Uid=username;Pwd=password;

When DB1 is in principal role, everything works OK. But, when DB1 goes down, and DB2 (Mirror) becomes principal, we receive an error: "Invalid connection string attribute"

We tried to change Data Source from server name to IP, to IP:1433... without success. We also tried to change parameter "Failover Partner" to "FailoverPartner", also without success.

Is it possible to connect to DB mirror with SQLOLEDB provider at all?
BiEmmeAsked:
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Vadim RappCommented:
Not possible with SQLOLEDB, but possible with SQLNCLI11 or SQLNCLI
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